Comparative Evaluation of 3D-Printed Resins for Single-Tooth Dental Crowns - Provisional and Permanent: A Scoping Review

Objective: Collect and synthesize data on 3D-printed resins used for single-tooth dental crowns. Methods: A comprehensive search was conducted across MEDLINE/PubMed, Web of Science, and Scopus databases, covering publications from January 2013 to 18th August 2024. Relevant gray literature was also considered. From a total of 2803 records initially identified, 103 studies met the inclusion criteria and were included in the review. Results: Data were extracted for 47 different 3D-printed resin materials, including information on product names, manufacturers, and chemical compositions. Mechanical properties: flexural strength (124 MPa), load to failure (1397 N), flexural modulus ( 2818 MPa), and Vickers microhardness (20.94 kgf/ mm2). Degree of conversion (27-95.2%); Wear loss (vertical loss: 62-257 μm; volumetric loss: 0.08-20 mm3); Surface roughness (Ra: 2.16 μm); Internal fit (137.26 μm), marginal fit (86.49 μm); Bond strength (16.97- 24.75 MPa). Cellular response and bacterial adhesion showed variability in biocompatibility, influenced by post-processing protocols. Conclusions: 3D-printed resins dental crowns demonstrate promising in vitro mechanical performance, including fracture resistance values that withstand typical masticatory forces. Studies report generally favorable bond strength, and acceptable internal and marginal adaptation. However, these materials tend to exhibit lower flexural strength, elastic modulus, and hardness when compared to milled resin counterparts.

3D Printing Additive Manufacturing Fixed Dental Prosthesis Scoping Review Dental Crowns Resin Composite